This floor layout does not include the tub (tub would be to along the right wall in the first picture). The door frame is that rectangle jutting out at the top. Toilet is represented by the 4" pvc, and vanity is represented by the taped rectangle, and windows are represented by the doubled tape along two edges. These were important "landmarks" both for engineering and aesthetic reasons.
Anyway, enjoy! We stood around for quite some time afterwards, grinning and giggling!